CO Detector Wiring

[pete_c]

I am in the process of wiring CO detectors that I purchased with my Omni Pro II setup and wondering about the best methodology. I currently have smokes that were put in by the builder (120V) and looking to add more connected to my Omni Pro II.

The CO detectors are GE ESL 240-COe. From what I can tell so far is to wire them into separate zones and just define them as CO detectors (AUX)?

 

[Ernie]

These are 4-wire devices, so your options are pretty wide open:

1. You can install on any zone on the HAI controller.
2. You can wire to each individual zone or in loop fashion to a single zone.

The only restrictions and/or suggestions that I would make are:

1. Unless you are experienced in HAI installations, I woudl suggest using zones 5 and higher, avoiding Zones 1-4, as these zones require non-standard wiring.

2. Do not mix CO with other fire devices (smokes or heat).

3. In order to work properly on HAI controllers, they must be wired as normally open, closed for alarm.

4. An EOL resistor is required at the end of the loop.

5. Most local fire codes also recommend/require EOL power supervision relays for 4-wire devices.

 

[pete_c]

Thanks LaJaycee. Yes I am at the end of the expansion board right now so will be using Z-twenty something.

So you would recommend an EOL power supervision relay? What specfically would you recommend?

 

[Ernie]

If the link below works, it shoudl take you to the System sensor EOLR-1

http://www.systemsensor.com/html/cd.html?UniqueID=128

 

[pete_c]

Thank you Lajaycee.

 

[pete_c]

Noticed in FL that the builder put smokes in every room in the house where as here in the MW there are just smokes on every floor in the house.

What is the current standard for CO detectors. Should one be put in every room in the house or am I OK with one on every floor?

 

[pete_c]

Initially before connecting the EOL supervisor module I put a 1K Ohm resistor across the terminals on the last CO detector. It gave me a loop value of 149 (like the others) with it set to NO.
Tested it to work fine.

I purchased an EOL supervisor module - Sentrol - 204-12/24V

I installed it per diagram with EOL Resistor of 1K ohm in series to one leg of the NO terminal. The loop value was reading 149.
As a test took the resistor across the two NO terminals and it gave me a value of 129.

At the Omni-Pro II panel I am using Zone 30 set for Gas and the 12VDC switched terminals .

I tested the CO detector and the relay did not trigger an alarm and the loop value of 149 did not change. When disconnecting the in series resistor I did trigger an alarm.

This is not making sense to me. Any suggestions to what I may be doing wrong?

Re Reading the threads it appears that in addition to the Supervisory module I will need a polarity reversing module to work with the OmniPro II that I have.

Just wanting to validate this?